PHL - IDA

$181 Find Cheap Flights from Philadelphia to Idaho Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Idaho Falls departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Idaho Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Idaho Falls, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$419
Overall average: $1,044
American Airlines
Sun 1/18Sat 1/24
PHL - IDA • 1 stop
Cheapest one-way
$181
Multiple Airlines
Wed 1/28
PHL - IDA • 2 stops
Top airlines
Alaska Airlines
Cheapest • from $422 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
February
Cheapest • 38% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Idaho Falls!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Idaho Falls (PHL-IDA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Idaho Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Idaho Falls

Sun, Jan 18 - Sat, Jan 24
American Airlines Logo
1:40 pm - 10:36 pm
PHL
-
IDA
10h 56m1 stop
American Airlines Logo
7:20 am - 5:42 pm
IDA
-
PHL
8h 22m1 stop
$419American Airlines
Sat, Jan 24 - Wed, Jan 28
Alaska Airlines Logo
7:06 pm - 6:18 pm
PHL
-
IDA
25h 12m1 stop
Alaska Airlines Logo
9:00 am - 6:03 pm
IDA
-
PHL
31h 03m1 stop
$422Alaska Airlines
Sun, Jan 18 - Sat, Jan 24
American Airlines Logo
10:43 am - 10:36 pm
PHL
-
IDA
13h 53m2 stops
American Airlines Logo
7:20 am - 5:42 pm
IDA
-
PHL
8h 22m1 stop
$424American Airlines
Fri, Jan 16 - Sun, Jan 18
American Airlines Logo
4:00 pm - 10:36 pm
PHL
-
IDA
8h 36m1 stop
American Airlines Logo
7:20 am - 8:01 pm
IDA
-
PHL
10h 41m1 stop
$449American Airlines
Sun, Jan 18 - Sat, Jan 24
American Airlines Logo
10:25 am - 10:36 pm
PHL
-
IDA
14h 11m2 stops
American Airlines Logo
7:20 am - 9:18 pm
IDA
-
PHL
11h 58m2 stops
$459American Airlines
Sun, Mar 1 - Sat, Mar 7
American Airlines Logo
3:55 pm - 11:24 pm
PHL
-
IDA
9h 29m1 stop
American Airlines Logo
2:18 pm - 12:54 am
IDA
-
PHL
8h 36m1 stop
$470American Airlines
Fri, Jan 16 - Sun, Jan 18
American Airlines Logo
12:08 pm - 10:36 pm
PHL
-
IDA
12h 28m2 stops
American Airlines Logo
7:20 am - 8:01 pm
IDA
-
PHL
10h 41m1 stop
$484American Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
6:30 am - 1:30 pm
PHL
-
IDA
9h 00m2 stops
United Airlines Logo
6:30 am - 3:50 pm
IDA
-
PHL
7h 20m1 stop
$514United Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
6:30 am - 1:30 pm
PHL
-
IDA
9h 00m2 stops
United Airlines Logo
6:30 am - 9:36 pm
IDA
-
PHL
13h 06m2 stops
$519United Airlines
Sun, Apr 26 - Fri, May 1
Alaska Airlines Logo
6:58 pm - 3:31 pm
PHL
-
IDA
22h 33m1 stop
Alaska Airlines Logo
4:08 pm - 6:02 am
IDA
-
PHL
11h 54m1 stop
$520Alaska Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Idaho Falls flights

Get data-powered insights and trends into flights from Philadelphia to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Philadelphia to Idaho Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Idaho Falls is February, where tickets cost $399 (return) on average. On the other hand, the most expensive months are January and April, where the average cost of round-trip tickets is $1,044 and $833 respectively.

Good to know

Low seasonMarch
Cheapest flight$181
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from Philadelphia to Idaho Falls

When to book flights from Philadelphia to Idaho Falls

Are your dates flexible? Find out the best times to travel from Philadelphia to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Idaho Falls

  • What is the cheapest flight from Philadelphia to Idaho Falls?

    In the last 3 days, the lowest price for a flight from Philadelphia to Idaho Falls was $181 for a one-way ticket and $419 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Idaho Falls?

    A passport is not required to fly from Philadelphia to Idaho Falls.

  • Which aircraft models fly most regularly from Philadelphia to Idaho Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Idaho Falls?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Philadelphia and Idaho Falls, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Philadelphia to Idaho Falls, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Idaho Falls are Delta and United Airlines. With an average price for the route of $508 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $665 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Philadelphia to Idaho Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Idaho Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Idaho Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Idaho Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and IDA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Idaho Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Philadelphia to Idaho Falls

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8019 reviews
7.3Food
7.9Entertainment
8.1Boarding
8.5Crew
7.9Comfort
Airline reviews

Did not realize internet screen was hidden between seats and no info printed!!!!

6.0 GoodAnonymous, Dec 2025
BOS - MSP
Read more Delta reviews

Did not realize internet screen was hidden between seats and no info printed!!!!

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Very good flight crew and very nice people staff were incredible especially the gate agent

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

The flight was delayed for about 2 hrs. Other than it, it was good.

Advertised fruit trays with cheese, but only snacks handed out!

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

They did the one thing that really matters - got to Chicago early.

I liked the snacks and the flight attendants were friendly.

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

Flight was late - I was downgraded from first class to coach

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

Everything you need to know for your flight from Philadelphia to Idaho Falls

Information on your arrival and departure airports